baber/WOPTO huggingface dataset:
Patent GB-614515-A (GB)
Title: Improvements in or relating to the catalytic polymerization of ethylene
IPC: C08F4/34
Filed: 1946-07-18
Abstract: Di-(tert-butyl) peroxide is used as catalyst in the polymerization of ethylene at temperatures between 60 DEG  and 400 DEG  C. and pressures between 2 and 3000 atmospheres.  Interpolymers may be similarly prepared with vinyl acetate, propionate, benzoate, trimethylacetate, hexenoate; styrene; vinyl chloride and fluoride; vinylidene fluoride, tetrafluoroethylene; propylene, isobutylene; butadiene-1,3-chloro-2- and fluoro-2-butadiene-1,3; octyl acrylate, methyl and decyl methacrylates; acrylo- and methacrylonitriles; acryl- and methacrylamides; N-vinylphthalimide, N-vinyl succinimide; maleic and fumaric acids and their dimethyl and diethyl esters; maleic anhydride; carbon monoxide.  Water or cyclohexane may be used as reaction media and the process may be carried out batchwise, semicontinuously or continuously.
Patent GB-669129-A (GB)
Title: Improvements in or relating to the preparation of a new unsaturated carbinol
Inventor: EVANS RONALD MAJOR
Filed: 1949-08-18
Abstract: 3 : 7 - Dimethyl - 1 - (11 - hydroxy - 21 : 61 : 61 - trimethylcyclohexyl) nona - 4 : 6 : 8 - trien - 1 - yne-3-ol having the formula <FORM:0669129/IV (b)/1> This compound is prepared by reacting a halogeno magnesium derivative having the formula <FORM:0669129/IV (b)/2> (where X is chlorine, bromine or iodine) with 6-methylocta-3 : 5 : 7-trien-2-one in the presence of an inert solvent, e.g. diethyl ether, di-isoamyl ether, dioxan or tetrahydrofuran and decomposing the resulting organo-magnesium complex, e.g. with water or aqueous ammonium chloride.  Preferably the reaction is effected in the temperature range -20 DEG  to +60 DEG C. in the presence of an antioxidant.  Specifications 627,453, 659,842 and 665,146 are referred to.
Patent GB-644544-A (GB)
Title: Improvements relating to indicator lamps
Inventor: FOXALL HORACE HENRY
IPC: H01R33/00
Filed: 1948-08-14
Abstract: 644,544. Lamp-holders. LUCAS, Ltd., J. Aug. 14, 1948, No. 21528. [Class 38 (i)] [Also in Group XI] The holder for an electric bulb of an indicator lamp (see Group XI) comprises an insulating disc f secured to a strip of resilient metal which is bent to form a rectangular frame h adapted to be pushed into the body of the lamp to grip the inside thereof. One side k of the frame is formed with a hole into which the cap of the bulb n is screwed. The disc f carries an insulated contact i connected to a terminal j; a complementary terminal p is secured to the frame.
Patent GB-1146146-A (GB)
Title: Optical projector
IPC: G03B21/132
Filed: 1966-05-16
Abstract: 1,146,146. Optical projection apparatus. R. VAN BERLYN (James W. Lucas). May 16, 1966, No. 21549/66. Heading G2J. In a portable overhead projector in which information may be added to a projected image, light from lamp 32 is directed by mirror 35 and condensers 36, 37 through a film-strip or slide at picture gate 38 and leaves projection lens 46 along path P1 to be reflected by mirrors 12 along path P 2  until it passes through a further film-strip 26 mounted on glass plate 48 and is reflected back through that film-strip by a concave mirror 47, to be focused on plate 48, the image focused on the plate and the image on film-strip 26 being projected by reflecting head 49, 50, 51 on to a distant screen. Mirror 47 may be the silvered surface of a plano-convex lens, and a negative Fresnel lens 47A immediately below plate 48 reduces double-imaging. Mirror 12 may be tilted to position 12A, and the hatch 55 raised, to direct images from an external projector 53 on to film 26, or again, the mirror may be tilted further to deflect the projection beam from the internal projector directly on to an external screen. Magazine 45 may contain slides for feeding in at opening 44 to aperture 38, or adaptor 39 may contain a film-strip which is manually advanced. Film-strip 26 is manually wound by crank 56 from spool 57 over plate 48, under mirror 47 and on to spool 62. A blower cools the lamp compartment. The projection head is focused by knob (17), Fig. 1 (not shown), which adjusts rod (16) through friction wheel (18) to set the inclination of pivoted cover (14) to which the head is secured. The head may be tilted relative to lid (14) for screen height adjustment. Lenses 49, 51, Fig.3, are separated by at least two-thirds of their diameter, and the focusing travel is reduced by the use of a hinged supplementary lens 52.
Patent GB-423444-A (GB)
Title: Improvements in the manufacture of plastic compositions containing organic sulphides
IPC: C08L81/00
Filed: 1933-08-01
Abstract: Composite plastics are manufactured by reacting an alkaline solution of a polysulphide of an alkali or alkaline earth metal with such proportion of formaldehyde, or a compound thereof with an alkali hydrogen sulphite, as is also sufficient to react concurrently with a phenol, an amine or casein, or a mixture thereof, to produce a second constituent of different type in intimate admixture with the first constituent.  The products may be used alone or with other plastics, e.g. in the preparation of rubber flooring, and may be added to rubber in order to render it resistant to oils or to increase its adhesiveness to rigid surfaces.  In examples, formaldehyde is reacted with sodium polysulphide solution and phenol in the presence of ammonia.  The Provisional Specification comprises also the reaction of formaldehyde, or a compound thereof with an alkali hydrogen sulphite, with a water-soluble polysulphide alone, and also with such a polysulphide and urea or thiourea.  Additional examples describe the action of sodium polysulphide solution on formaldehyde and on its sodium bisulphite compound.ALSO:Indiarubber is rendered resistant to oils and its adhesiveness to rigid surfaces is increased by the addition of composite plastics prepared by reacting an alkaline solution of a polysulphide of an alkali or alkaline earth metal with such proportion of formaldehyde, or a compound thereof with an alkali p  hydrogen sulphite, as is also sufficient to react concurrently with a phenol, an amine or casein, or a mixture thereof, to produce a second constituent of different type in intimate admixture with the first constituent.  The plastics may be used alone or with other plastics, e.g. in the preparation of rubber flooring.  According to the Provisional Specification there may also be used the reaction products of formaldehyde, or a compound thereof with an alkali hydrogen sulphite, with a water-soluble polysulphide alone, or with such a polysulphide and urea or thiourea.
Patent GB-594762-A (GB)
Title: Improvements in or relating to the coating of the surfaces of ferrous metals
IPC: C23C22/62
Filed: 1943-12-24
Abstract: Oxide coatings are produced on ferrous metals by treating the latter in an aqueous oxidizing solution containing alkali nitrates or nitrites or both, an alkaline compound having a strong alkaline reaction, and plumbago, and/or other forms of natural or artificially produced carbon such as graphite, activated carbon and charcoal, the latter preferably in the proportion of 1/8 -1 oz. per gallon of solution.  Part of the plumbago &c. added forms a protective layer in the solution which may also contain an additional compound or compounds such as a catalyst, e.g. vanadium pentoxide or complex-forming compounds, e.g. potassium cyanide or both.
Patent GB-1475966-A (GB)
Title: Ceramic green sheets
IPC: C04B33/30
Filed: 1975-05-20
Abstract: 1475966 Ceramic sheets INTERNATIONAL BUSINESS MACHINES CORP 20 May 1975 [15 July 1974] 21626/75 Heading B5A Green ceramic sheets comprising a particulate ceramic and a thermoplastic polymeric binder are stabilized against dimensional variation after moulding (e.g. by casting) and prior to firing by treatment with a solvent for the binder for a period of time sufficient to allow of plasticizing and softening, but not dissolution, of the binder. The solvent may be in vapour or liquid form, and, if liquid, may be applied as a spray; vapour treatment is generally preferred. The stabilized sheets are particularly useful for making multilayer ceramic modules for the computer industry.
Patent GB-463605-A (GB)
Title: Improvements in locks and latches
IPC: E05B63/18
Filed: 1936-08-06
Abstract: 463,605. Latches. OLDHAM, J. L. Aug. 6, 1936, No. 21639. [Class 44] A spring latch is retained non-positively in withdrawn position solely by the pressure of one or more springs for actuating the latch. The key follower 15 engages a movable plate 13 forming the movable abutment of the main springs 18 and resting in recesses in lugs 19 so as to have rocking movement, the plate having a projection or abutment 22 engaged by the follower 15. The follower of the inside knob may also engage the abutment 22, in which case the usual night-latch retainer may be dispensed with. The rear plate 14 may be carried by one rod 12 with one spring 18.
Patent GB-217040-A (GB)
Abstract: 217,040. Dobbie, D. W. June 4, 1923. Transfer-mechanism for,adding and subtracting apparatus of the type comprising a series of handactuated numeral elements or bobbins 3, consists of a lever 6 supported rotatably and slidably at 9 and pivoted at one end to the lower denomination bobbin and co-operating at the other end with teeth 5 on the higher value bobbin. The support 9 may consist of a casing carried by a rotary spindle 10 and containing a pair of spring-controlled rollers bearing on the lever. To prevent jamming, the latter may be of telescopic structure as shown in Fig. 3, a spring 18 being interposed between the outer tube 13 and the piston 16 on the rod 14 pivoted to the lower bobbin.
Patent GB-1236137-A (GB)
Title: Pneumatic tire
IPC: B60C9/06
Filed: 1969-04-29
Abstract: 1,236,137. Pneumatic tyres. GOODYEAR TIRE & RUBBER CO. 29 April, 1969 [27 May, 1968], No. 21707/69. Heading B7C. A pneumatic tyre for high speed use has in the uninflated state a ground contacting surface 34 in which the portion 38 thereof in the region of the mid-circumferential plane has a diameter larger than the diameter of the intermediate portions 40 on either side of the mid-circumferential plane but smaller than the diameter of the edge portions 36. The carcase 30, which comprises four layers of parallel cord fabric, generally follows the sinusoidal path of the ground contacting surface, while the tread is thicker at the central portion 38 than the intermediate portions 40, but less thick than the edge portions 36. The cord angle is less than 30 degrees, the cords are designated 840/2. The end count of the plies is substantially equal to 1/D+S, where D is the diameter of the cords and S is the spacing between the cords and is equal to from 0.001 to 0.003 inches. When inflated the ground contacting surface is substantially flat, as indicated in broken lines on Fig. 3.
Patent GB-357079-A (GB)
Title: Improvements in and relating to the manufacture of films from cellulose acetate solutions
IPC: D01F2/30
Filed: 1930-05-15
Abstract: Films, foils, filaments, &c. are produced by evaporating the solvent from a solution of cellulose acetate in methyl ethyl ketone, in a substantially closed chamber the atmosphere within which has a temperature of 30-75 DEG  C., and 50-95 per cent humidity; the room temperature being 20-40 DEG  C.  Softening agents, e.g. oils such as castor, sulphurated castor, turkey-red, whale, coco nut, neatsfoot, paraffin, fish, olive, cod liver or bone; clarified mutton-fat, beeswax, &c., may be added.  Fireproofing salts, zinc chloride, colouring or metallizing materials may also be added.  Examples of solutions are given containing cellulose acetate dissolved in methyl ethyl ketone with the following additions: (1) zinc chloride, (2) acetone and zinc chloride, (3) zinc chloride and olive oil, (4) triphenyl phosphate and whale oil.  (5) triphenyl phosphate and paraffin oil.  The relative proportions by weight of cellulose acetate and methyl ethyl ketone are 1 : 5 to 1 : 9.  Films, foils, &c. may be produced on machines such as are described in Specifications 324,340, 324,341, [both in Class 140, Waterproof &c. fabrics], and 324,694, [Class 2 (ii), Cellulose &c.].
Patent GB-1397518-A (GB)
Title: Etching of polymeric bodies
IPC: B44C1/22
Filed: 1973-05-09
Abstract: 1397518 Etching NCR CORP 9 May 1973 [15 May 1972] 22092/73 Addition to 1275686 Heading B6J A cast body of at least two polymeric materials which materials may exist as a homogeneous, substantially transparent solid solution or as a heterogeneous translucent solid is imaged by applying a stimulus to cause the materials in selected areas of the body to change from the solid solution to the heterogeneous translucent solid condition and the imaged areas are etched by applying thereto a solvent for at least one of the polymeric materials in the imaged areas which solvent will not dissolve the polymeric materials in the remaining areas. The polymeric materials and the methods by which they are imaged are disclosed in the parent Specification 1,275,686 (Division B5). The etching agent may be water, methanol, ethanol or mixtures thereof. A dye may be added to the etching liquid such that the etched block may be used as a printing plate by transference of the dye to a copy sheet.
Patent GB-1347403-A (GB)
Title: Process for refining liquid pig iron in a spray refining plant and spray refining plant for carrying out such process
IPC: C21C5/56
Filed: 1971-04-19
Abstract: 1347403 Metallurgical converters VEREINIGTE OSTERREICHISCHE EISEN-UND STAHLWERKE AG 19 April 1971 [20 Feb 1970] 22159/71 Heading F4B [Also in Division C7] Apparatus for spray steel-making includes an inlet funnel 2 having an inclined face 5 on to which the incoming stream of iron 4 falls to broaden into a curtain 6 which does not fill the slot orifice 3 of the funnel and is atomized by gas jet 8. Preferably additives are introduced through shoot 12 on to face at the impingement zone of the metal.
Patent GB-417967-A (GB)
Title: Improvements in or relating to methods of and apparatus for removing cores from tires
IPC: B29D30/06
Filed: 1933-08-08
Abstract: 417,967. Roller-way conveyer. FIRESTONE TYRE & RUBBER CO., Ltd., Great West Road, Brentford, Middlesex. Aug. 8, 1933, No. 22173. Convention date, March 6. [Class 78 (i).] In extracting cores, such as airbags, from tyres, the tyre is deformed so as locally to spread the beads and expose the core which is then removed by pressure applied to the exposed portion in a direction parallel to the axis of the tyre. In an apparatus shown, Figs. 1, 12, 13, tyres 26 are fed on conveyer rollers 22 revolved by a constantly driven motor 46 via magnetic clutch 47, reduction gear 39 and chain 34. The tyre removal conveyer rollers 23 are similarly driven by chain 41 while the core removal conveyer rollers 140 are constantly driven. When the tyre reaches the determined position it trips a switch by means of lever 63 which opens clutch 47, stops conveyer rollers 22, 23 and closes magnetic clutch 119. Gear 110 thereby starts to rotate and via a cam wheel and its interconnected gearing moves member 86 to compress the tyre against member 77 and thus open the beads. Meanwhile via another cam wheel and its gearing ram 126 is forced upwards so as to engage with the core when the tyre is fully compressed. As the ram starts to lift the core 27, member 77 is retracted to prevent damage to the upper tyre bead as the core is pushed out. The core on release from the tyre flips itself off the ram hook 135 and drops onto conveyer rollers 140. The continued rotation of gear 110 brings the apparatus back to its initial state.
Patent GB-1262545-A (GB)
Title: A mower construction
Inventor: KASBERGER LUDWIG
IPC: A01D34/66
Filed: 1969-05-01
Abstract: 1,262,545. Mowing machine. MASCHINENFABRIK FAHR A.G. 1 May, 1969 [10 May, 1968], No. 22239/69. Headings A1F and A1P. A mower is mounted on a tractor so that the mower may be moved vertically between a working and a transport position and be free to follow the ground contour. The strut 5 is rigid with the frame 4, which is attached to the tractor power lift, and the lever 10 pivotally connects the strut 5 to the link 12. The lever 7, whose downwardly extending arm is shorter than the upwardly extending one, is pivotally attached to the strut 5, the link 11 and, to the lever 10 by means of the strut 8. An abutment 17 is arranged to limit the downward travel of the boom by limiting the anti-clockwise rotation of the first lever 7 so that, when the abutment engages the lever 7 and the boom is lifted, the mowing boom 3 is horizontal. The connection between the first lever 7 and the first link 11 comprises a slot 15 and co-operating pin 16 so arranged that the pin engages the end of the slot remote from the mower when the mower boom is horizontal, and the lever 7 is engaged with the abutment 17.
Patent GB-185727-A (GB)
Title: Improvements in or relating to electrical signalling devices
IPC: G08C19/18
Filed: 1922-08-16
Abstract: 185,727. Cibles Automatiques Michoud Soc. Anon. Sept. 7, 1921, [Convention date]. Tell-tale apparatus.-In a signalling system employing few line wires and particularly applicable to targets of the type described in Specification 129,285, one, two, three, or. four impulses are transmitted to the magnet G by closure of the switches A', A<2>, A<3>, or A<4> respectively. When the switch A<3>, for instance, is momentarily closed, the coil b<3> is bridged across the mains B, C, and the armature C<3> , being attracted, engages the pendulum contact d<3> causing it to close at e<3> the circuit of the magnet G, the' wires F<1>, F<2> being connected to the mains. The pendulum d<3> on falling back strikes a second pendulum h<3> which' clcses at h<111> a circuit energizing the coil b<2>. This coil in the same manner sends one impulse to the magnet G through the contacts d<2>, e<2>, and then energizes the coil b<1> through contacts h<2>, h<11>. The coil b' thereupon sends one more impulse' to the magnet G, which records a hit in the third zone or quadrant of the sectional target. Similarly the switch A<4> effects four impulses, the switch A<2> two, and the switch A<1> one. Two such systems are employed, one for indicating the zone and the other the quadrant in which a hit occurs, the switches A<1> - - A being automatically operated by the bullets.
Patent GB-639268-A (GB)
Title: Improvements in and relating to welding alloys
IPC: B23K35/30
Filed: 1947-08-12
Abstract: An alloy, particularly for use as a welding rod, has the following composition: Ni 10.25-16.0 per cent Cu 42.0-48.0 per cent P or Si 0.2-1.0 per cent Zn the balance.  The Specification as open to inspection under Sect. 91 refers to an alloy of the composition:-Ni 9.0-16.0 per cent Cu 42.0-48.0 per cent P or Si 0.2-1.0 per cent Ag 1.0-48 per cent Zn the remainder.  This subject - matter does not appear in the Specification as accepted.
Patent GB-388033-A (GB)
Title: Improvements in photoelectric methods of measuring the area of opaque objects of irregular form
IPC: G01B11/28
Filed: 1931-08-07
Abstract: 388,033. Area meters. BUCZACZER, M., 26, St. Aidans Road, East Dulwich, London. Aug. 7, 1931, No. 22396. [Class 106 (i).] The area of an object such as a hide is determined by measuring photoelectrically the light blocked out by the object when it is placed on an illuminated surface, means being provided to compensate for irregularities in the illumination of the surface. The hide 3 is placed on a surface 1 illuminated by lamps 2, the light passing through an optical system 4 to a diffusing box 5 containing photoelectric cells 6. To compensate for the irregularities of illumination or imperfections in the optical system a photographic negative 7 is interposed in the light path. This negative is previously exposed to the light from the surface 1 in the absence of the hide, and then developed, the dark parts of the negative thus compensating for the light parts of the surface, and vice versa. In another method, the surface 1 is illuminated by a travelling strip of light and the total charge passed through the cells 6 is measured by a ballistic galvanometer. This second method may be used either in conjunction with the negative 7 or independently. The area determined may be stamped on the hide by known means.
Patent GB-623091-A (GB)
Title: Improvements in gas heated water boilers
IPC: F24H9/20
Filed: 1946-07-27
Abstract: 623,091. Fluid and thermally-actuated valves. LOMAX, W. July 27, 1946, No. 22396. [Class 135] A gas-heated water boiler of the type which supplies either boiling water or hot water below the boiling point has the water supply valve E maintained closed by the supply pressure in the chamber d<SP>1</SP> acting on the head e of the valve, and opened when the water is boiling by a diaphragm or bellows G bearing on a shank e' and controlled by a thermostatic device, e.g. the capsule g' placed in the annular inlet chamber C in the boiling compartment B. The valve has a pin f<SP>1</SP> and groove e<SP>3</SP> connection with a screwed handle F whereby the valve may be opened to supply hot water below the boiling point. Specification 615,135, [Group XIII], is referred to.
Patent GB-329901-A (GB)
Title: Improvements relating to bedstead and like mattresses and upholstery
IPC: A47C23/043
Filed: 1929-07-22
Abstract: 329,901. Short, J. W. T., and Smith, C. W. July 22, 1929. Mattresses.-An upper floating frame for a mattress is supported above the main frame by compression springs g held between the limbs of pivoted X frame supports d which slidably engage the floating and main frames. As shown, the compression springs are held in cups with wheels d<2> running on guide rods e<1> carried by the respective frames, .the main frame being preferably of the well-base type and the whole mattress formed in two sections. Damping springs f<2> of the blade spring type may be used to prevent rebound.
Patent GB-1435731-A (GB)
Title: Locking device for the lid of a pressure vessel
IPC: F16J13/02
Filed: 1973-05-11
Abstract: 1435731 Locking pressure vessel lids ATOMENERGI AB 11 May 1973 [26 May 1972] 22548/73 Heading F2P The lid 25 of a pressure vessel 29 is locked by a device having a plurality of support legs 10 pivotally mounted on a support plate 8 to engage under a rim shoulder 27 on the vessel 29, the plate 8 being movable radially of the lid. An hydraulic or pneumatic slide 4 is linked by an arm 14 to the leg 10 and to the support plate 8 by a sprung arm 18 and operates a wedge 7 which engages the plate 8 to apply the leg 10 against the shoulder 27. As shown, the plate 8 can slide on a guide 9 attached to a ring 3 which is loosely positioned on a seal 24 resting on a shoulder 25a of the lid 25. A piston-rod 2 is attached to the plate 3 and a cylinder 1 moves the wedge 7 and a link-arm bearing 6 which engages the arm 14 on the upwards movement of the cylinder. When the support legs 10 are in their locked positions and pressed against a plate 21 having an edge 22 beneath the shoulder 27, a yoke 28 is slid into the locking position shown to prevent premature opening. To release the device, the yoke 28 is slid back and the cylinder 1 is raised to move the wedge 7 upwards. The support plate 8 moves towards the lid centre under control of the sprung arm 18 and the leg 10 pivots inwardly of the lid so that the device, lid and ring 3 may be removed.